Valley-conserved topological integrated antenna for 100-Gbps THz 6G wireless

Area of Science:

• Photonics
• Quantum Information Science
• Wireless Communications

Background:

• Topological phases enable advanced wave transport and photonic interconnects.
• Momentum mismatch due to material impedance hinders intermedium topological mode transitions.

Purpose of the Study:

• To present a high-speed topological wireless communication link using integrated photonic devices.
• To address the challenge of momentum mismatch in topological mode transitions.

Main Methods:

• Development of valley-conserved silicon topological waveguide antennas.
• Integration of complementary metal oxide semiconductor-compatible devices.

Main Results:

• Demonstration of a 100-Gbps topological wireless communication link.
• Achieved 12.2-dBi gain and constant group delay across a 30-GHz bandwidth.
• Enabled active beam steering within a 36° angular range.

Conclusions:

• Valley-conserved devices represent a milestone in hybrid electronic-photonic topological wireless communications.
• Enables terabit-per-second backhaul, high throughput, and efficient information carrier transport.
• Crucial for future communication generations (6G and beyond).